Bump version to 1.8.15

chore: bump version to 1.8.14

chore: bump version to 1.8.13

chore: bump version to 1.8.12

chore: release v1.8.11

chore: polish structure and tts player

chore: improve remote project health

docs: 移除 README 底部 "Powered by" 行

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

1